Initial cleanup for python3

[schwehr]

Just some initial top level stuff to get going in the direction of python3 support. Still need more before 2to3 works. e.g.

2to3 .
[snip]

RefactoringTool: ./www/conf.py
RefactoringTool: Warnings/messages while refactoring:
RefactoringTool: ### In file ./build/lib.linux-x86_64-2.7/Cheetah/Parser.py ###
RefactoringTool: Line 346: cannot convert map(None, ...) with multiple arguments because map() now truncates to the shortest sequence
RefactoringTool: Line 346: cannot convert map(None, ...) with multiple arguments because map() now truncates to the shortest sequence
RefactoringTool: ### In file ./cheetah/Parser.py ###
RefactoringTool: Line 346: cannot convert map(None, ...) with multiple arguments because map() now truncates to the shortest sequence
RefactoringTool: Line 346: cannot convert map(None, ...) with multiple arguments because map() now truncates to the shortest sequence

[hayd]

Is this project dead? There's been no update since 2010.

[phdru]

This was applied at CheetahTemplate3/cheetah3@fe2aa58

Thank you!